US 12,473,005 B2
Stroller frame and stroller
Mingxing Sun, Guangdong (CN)
Assigned to Wonderland Switzerland AG, Steinhausen (CH)
Appl. No. 17/768,225
Filed by Wonderland Switzerland AG, Steinhausen (CH)
PCT Filed Oct. 23, 2020, PCT No. PCT/EP2020/079894
§ 371(c)(1), (2) Date Apr. 12, 2022,
PCT Pub. No. WO2021/078994, PCT Pub. Date Apr. 29, 2021.
Claims priority of application No. 201911028073.0 (CN), filed on Oct. 25, 2019.
Prior Publication US 2023/0182800 A1, Jun. 15, 2023
Int. Cl. B62B 7/10 (2006.01); B62B 7/06 (2006.01); B62B 9/08 (2006.01)
CPC B62B 7/10 (2013.01) [B62B 7/062 (2013.01); B62B 7/066 (2013.01); B62B 9/082 (2013.01); B62B 9/087 (2013.01); B62B 2205/12 (2013.01); B62B 2205/18 (2013.01); B62B 2205/24 (2013.01); B62B 2301/20 (2013.01)] 26 Claims
OG exemplary drawing
 
1. A stroller frame (100) comprising:
a front leg (10), a bottom tube (30), a rear leg (20), an upper support member (40), and a lower support member (50), wherein the front leg (10), the bottom tube (30), the lower support member (50), and the upper support member (40) are pivotally connected to each other to form a four-bar linkage structure, and the rear leg (20) is connected to an end of the bottom tube (30) close to the lower support member (50), and
a lock mechanism (60) disposed at a pivot joint between the upper support member (40) and the lower support member (50), the lock mechanism (60) comprising an operating member (61), an engaging member (62), and a fixing member (63) engaging with the engaging member (62), the engaging member (62) is movably disposed on the lower support member (50), the fixing member (63) is disposed on the upper support member (40), and the fixing member (63) corresponds to and engages with the engaging member (62) when the upper support member (40) and the lower support member (50) are situated at the expanded angle, and the operating member (61) is connected to the engaging member (62) and controls the engaging member (62) to be disengaged from the fixing member (63) to unlock the lock mechanism (60);
wherein the lock mechanism (60) is configured to lock the upper support member (40) and the lower support member (50) at an expanded angle, such that the front leg (10) is expandable with respect to the bottom tube (30), and
wherein the lock mechanism (60) is configured to be unlocked to release the upper support member (40) and the lower support member (50), such that the front leg (10) is foldable with respect to the bottom tube (30).